Question

1.
Find the roots of the following quadratic equations.
(a) x2 + 2x – 15 = 0.
A​

Answer 1

Answer:

so simple

Step-by-step explanation:

1. i think my answer will use you more

Answer 2

Step-by-step explanation:

${x}^{2} + 2x - 15 = 0$

${x}^{2} + 5x - 3x - 15 = 0$

$x(x + 5) - 3( x+ 5) = 0$

$(x + 5 )( x- 3) = 0$

$roots \: are \: - 5 \: and \: 3$